class Base {
    public Base(String s) {
        System.out.println("B");
    }
    public void fun() {

    }
}
public class demo1 extends Base{
    public demo1(String a) {
        super(a);
        System.out.println("D");
    }
    public void fun1() {
        fun();
    }
    public static boolean ret() {
        System.out.println(1);
        try{
            return  true;
        }
        catch (Exception e) {

        } finally {
            return false;
        }
    }

    public static void main(String[] args) {
        System.out.println(ret());
    }
}
